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4. i. Using the data at the bottom of the question, calculate the enthalpy of formation of W(CO)6(S). ii. At 298 K, the enthalpies of sublimation of W(CO)6(s) and of W(s) are 75.6 and 849.4 kJ mol¹ respectively. Calculate the mean (W-CO) bond dissociation enthalpy in W(CO)6. The following enthalpies of combustion have been measured at 298 K. W(s) + 1.5 O2(g) → WO3(s) -> W(CO)6(s) + 4.5 O2(g) → WO3(s) + 6CO2(g) CO(g) + 0.5 O2(g) → CO2(g) -> C(s) + O2(g) → CO2(g) ACH₁ =-842.9 kJ mol-¹ AcH2-2242.7 kJ mol¯¹ AcH3 = -282.8 kJ mol¹ AcH4-393.5 kJ mol¹

4. i. Using the data at the bottom of the question, calculate the enthalpy of formation of W(CO)6(S). ii. At 298 K, the enthalpies of sublimation of W(CO)6(s) and of W(s) are 75.6 and 849.4 kJ mol¹ respectively. Calculate the mean (W-CO) bond dissociation enthalpy in W(CO)6. The following enthalpies of combustion have been measured at 298 K. W(s) + 1.5 O2(g) → WO3(s) -> W(CO)6(s) + 4.5 O2(g) → WO3(s) + 6CO2(g) CO(g) + 0.5 O2(g) → CO2(g) -> C(s) + O2(g) → CO2(g) ACH₁ =-842.9 kJ mol-¹ AcH2-2242.7 kJ mol¯¹ AcH3 = -282.8 kJ mol¹ AcH4-393.5 kJ mol¹

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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4. i. Using the data at the bottom of the question, calculate the enthalpy of formation of W(CO)6(S). ii. At 298 K, the enthalpies of sublimation of W(CO)6(s) and of W(s) are 75.6 and 849.4 kJ mol¹ respectively. Calculate the mean (W-CO) bond dissociation enthalpy in W(CO)6. The following enthalpies of combustion have been measured at 298 K. W(s) + 1.5 O2(g) → WO3(s) -> W(CO)6(s) + 4.5 O2(g) → WO3(s) + 6CO2(g) CO(g) + 0.5 O2(g) → CO2(g) -> C(s) + O2(g) → CO2(g) ACH₁ =-842.9 kJ mol-¹ AcH2-2242.7 kJ mol¯¹ AcH3 = -282.8 kJ mol¹ AcH4-393.5 kJ mol¹
Transcribed Image Text:4. i. Using the data at the bottom of the question, calculate the enthalpy of formation of W(CO)6(S). ii. At 298 K, the enthalpies of sublimation of W(CO)6(s) and of W(s) are 75.6 and 849.4 kJ mol¹ respectively. Calculate the mean (W-CO) bond dissociation enthalpy in W(CO)6. The following enthalpies of combustion have been measured at 298 K. W(s) + 1.5 O2(g) → WO3(s) -> W(CO)6(s) + 4.5 O2(g) → WO3(s) + 6CO2(g) CO(g) + 0.5 O2(g) → CO2(g) -> C(s) + O2(g) → CO2(g) ACH₁ =-842.9 kJ mol-¹ AcH2-2242.7 kJ mol¯¹ AcH3 = -282.8 kJ mol¹ AcH4-393.5 kJ mol¹
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